diff --git a/free-programming-books-es.md b/free-programming-books-es.md
index d8607bf3..a549875a 100644
--- a/free-programming-books-es.md
+++ b/free-programming-books-es.md
@@ -19,6 +19,7 @@
 * [Java](#java)
 * [Python](#python)
 * [Ruby](#ruby)
+* [Ruby on Rails](#ruby-on-rails)
 * [R](#R)
 
 ###Metalistas